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In this article, we determine the automorphism groups of $14$ holomorphic vertex operator algebras of central charge $24$ obtained by applying the $\mathbb{Z}_2$-orbifold construction to the Niemeier lattice vertex operator algebras and lifts of the $-1$-isometries.

Automorphism groups of the holomorphic vertex operator algebras associated with Niemeier lattices and the $-1$-isometries